SVOLAZZO V2 - VTPR

[Wayne]

We are working with the designer, Stéphane Combet to create a new version of his SVOLAZZO featuring a fiberglass fuselage and hopefully a much easier build. He are some pics of the V1 and V1.5:

TECHNICAL DATA
Wingspan: 2.25 meter
Weight: 1400 grams
Airfoil: SC17
Madstab (stabilizer 180°)
Madrudder (rudder 1800°)
Ailerons + flaps + pitcheron

He has been refining the tail design for a number of years. It is a fine line of lightness and toughness to manage the MAD throws of such a large model without ripping things apart.

Stephane describes his goals this way:

the point with this glider is to be able to fly (normal or inverted) even in light lift, using 4 axes technique, - and its ability to perform flips, flat-spins, and other special tricks thanks to "Voltige Totale" systems. This latest point is important: only few people experimented madstab, madrudder and wingerons (Voltige Totale systems) on gliders of this size and weight.

More details can be found here:

Svolazzo

Français Je présente ici un voltigeur perso tout bois, largement basé sur le Troll de François, avec un look tout en courbes. English I present here an all-wood personal aerobat, largely based on F…

voltige-planeur-rc.net

While work is very much in progress on this, the fiberglass fuselage will take some time. I hope to offer a wood fuselage initially.

 

[Hawaii Sloper]

That plane reminds me of a Quark or Orchrist.

 

[Red]

Since Red posted up about his new VTPR project, I wanted to share something we have in the works, but didn't want to mess up his thread.

We are working with the designer, Stéphane Combet to create a new version of his SVOLAZZO featuring a fiberglass fuselage and hopefully a much easier build. He are some pics of the V1 and V1.5:
View attachment 17327
TECHNICAL DATA
Wingspan: 2.25 meter
Weight: 1400 grams
Airfoil: SC17
Madstab (stabilizer 180°)
Madrudder (rudder 1800°)
Ailerons + flaps + pitcheron

He has been refining the tail design for a number of years. It is a fine line of lightness and toughness to manage the MAD throws of such a large model without ripping things apart.
View attachment 17328
Stephane describes his goals this way:


More details can be found here:

Svolazzo

Français Je présente ici un voltigeur perso tout bois, largement basé sur le Troll de François, avec un look tout en courbes. English I present here an all-wood personal aerobat, largely based on F…

voltige-planeur-rc.net

While work is very much in progress on this, the fiberglass fuselage will take some time. I hope to offer a wood fuselage initially.

Dig it. I very nearly bought one of those!

 

[Stephane]

Hey hello!
Happy to start this new project with you Wayne!
It is an honor to work with AloftHobbies.
So I am from France, I love slope aerobatics, I think I have acquired some knowledge on Voltige Totale stuff (madstab and so on), but I still have many things to learn! So the first objective is to make wing building easier, with Wayne suggestions I have redrawn them and now I'm waiting for local laser-cutter to cut some wood for me...

 

[Red]

Hey hello!
Happy to start this new project with you Wayne!
It is an honor to work with AloftHobbies.
So I am from France, I love slope aerobatics, I think I have acquired some knowledge on Voltige Totale stuff (madstab and so on), but I still have many thing to learn! So the first objective is to make wing building easier, with Wayne suggestions I have redrawn them and now I'm waiting for local laser-cutter to cut some wood for me...

Welcome Stephane! I look forward to building a SVOLAZZO when they are availble. Can you translate the name or tell me what it means?

Cheers
Red

 

[thenated0g]

@Stephane I watched some videos on youtube, that plane looks fun!

 

[Stephane]

Thank you!
For the name, it is inspired from Italian and in my mind it's a mix between "flower", "flying like a butterfly", and "performing aerobatics"... But not sure of the exact meaning, this is more feeling than exact etymology
Yes you can find it on YouTube, I also love making videos of slope aerobatics...
Here is one only with slow mo:

 

[Red]

Beautiful! Please keep us posted on the progress.

 

[Wayne]

Stephane - Great to see you here.

Since you are one of the few people I know that has flown a plane with wingeron and ailerons, I have some questions for you. I have not yet looked into the programming for this setup, but I understand someone made a video with suggested mixes for OpenTX in French. I have not found this video yet, but being in French may make it a bit harder to follow. Can you tell us a bit about the mixing setups you have found effective?

For example, when are you using the ailerons and when are you using the wing pitch? Or are you always mixing them together?

Do you mix in any camber changes with elevator?

It opens up a lot of questions on how to integrate the wing twist and when.

Thanks!

 

[jure]

love this SVOLAZZO scheme !

 

[Stephane]

@Wayne

First it is important to know why there is wingeron (incidence of wings controled for roll only) on the Svolazzo: the ONLY reason is for performing flat spins. While a more little glider like an Ahi can perform it just with aileron and 4-axis, I could never perform it without wingeron on a 2 meter glider.
In flat spin, the wings have to become a passive propeller just falling down: the one outside of the spin is flying forward but the one inside is flying backward, its trailing edge becoming the leading edge.

So when performing (or trying to ) a flat spin with the Svolazzo, I have full wingeron on rolling axis. The flaps have +-25° traveling and the ailerons have +-10° traveling. This gives to the wing the shape of a propeller, with bigger incidence close to center than at tips.

This is the main point.

Out of flat spin, we could just block the wingeron to neutral. But I take the opportunity to have bigger rolling rate with adding wingeron to classical aileron at more than 50% of the sticks.

About mixes between elevator and camber: I personaly prefer 4-axis piloting. Anyway, sure for SC17 performance piloting the camber and reflex is very important, being by mix or by 4-axis.

About videos on that topic, I did this one in both French and English. No detailed programing here but just how I pilot a Voltige Totale glider from Tx point of view:

I also did some videos about Open Tx programing for the Svolazzo, but in French only. Here is the one about wings:

 

[Wayne]

Excellent! Honestly a bit more easier than I might have imagined.

Thanks!

 

[Stephane]

Hello all,

I just wondered: do you know this little "movie" we did with Steve Lange and François Cahour in the French Alps, summer 2019? François Cahour is the Yoda master of Voltige Totale. This video was filmed the very same week I maiden the Svolazzo with François and Steve looking at it. The Svolazzo has very much setup directly coming from François Cahour designs.
23 minutes of flying and interviews for slope aerobatics aficionados!

 

[Wayne]

I had not seen this video.. Will have to watch the full length a bit later. (darn work)

 

[thenated0g]

I wish steve would come to sunset one of these times. I think hes into surfing now though.

 

[Wayne]

I flew with him about 15 years ago when he was into "ultrabatics". He was visiting as many slope spots as possible to promote that style of plane and flying. He is dedicated.

 

[Stephane]

Hi everyone,

Just to give some update about how it's going on my side.
As a reminder, the goal for the coming alofthobbies kit of the Svolazzo V2 is:
- a fiber glass fuselage
- easier to build wing and stab.

The fiber fuselage design is starting to look good. Wayne is looking for availability of his fiber specialists before Alofthobbies can start to work on it.

I am quite happy with the wing new design. I was waiting for local laser cut to prepare my parts, he was in holidays. After he came back, we discussed about my files and the prices of its wood so I have nothing up to now, hopefully he will cut something this week.

Here 2 pixes, the stab and the fuse.

Stay tuned!

 

[Wayne]

Looking really good.

 

[Stephane]

Hello,
Local laser-cut man has done first ones. 3mm balsa and 2mm plywood.
More to come, you can see the files prepared for balsa 6mm.
I will take pictures of building steps of this new design wing.

 

[Red]

Hello,
Local laser-cut man has done first ones. 3mm balsa and 2mm plywood.
More to come, you can see the files prepared for balsa 6mm.
I will take pictures of building steps of this new design wing.

Looking good!